tear grasses -- had to use tear gas to disperse the protesters. some of the refugees attacked some of the aid workers and security forces. there is a very high level of frustration inside the camps because these people are having to live inside a cold community of tents outside the villa of the winter. these riots at scuffles are not unusual at have happened in the past. usually it is because of deep frustration. they have 2 q every day to receive assistance, blankets and tents. it is very frustrating. >> thank you. fighting between two arab tribes in western sudan has displaced from 100,000 people. united nations officials say its quickly turning into one of the biggest crises of the year. violence broke out because of a dispute over a gold mine in a remote part of our four. a convoy carrying blankets and other supplies has just set off on a days long journey to deliver emergency aid. at least 15 people have been killed in a suicide bomb attack on the provincial police headquarters in iraq. 90 people were wounded. one suicide bomber targeted the